Hi Emma---Could be a connection. My grandmother was Louise Wischnewski (even though the spelling is different, pronunciation seems the same) and she was born in East Prussia. She came to Iowa and married my grandfather --Fredrich W. Wittkowski in 1888. He was from Neudorfchen, West Prussia, which is not too far from Danzig and the border between East and West Prussia is in that area so it is possible that there could be a connection. I don't have too much info on the Wischnewski family, but I do know that my grandmother had a sister named Tina. I would be glad to hear and see if u think there might be a connection. Thanks, Bill Wittkowski